What is the role of nozzles in a dry chemical suppression system?

In a dry chemical suppression system, the primary role of nozzles is to disperse the agent effectively. Nozzles are designed to atomize the dry chemical so that it can be spread evenly over the fire area, ensuring thorough coverage and maximum extinguishing effectiveness. The dispersion of the agent helps to smother the flame by interrupting the chemical reaction sustaining the fire.

When the dry chemical is discharged through the nozzle, it creates a fine mist or cloud that can quickly blanket the fire, preventing it from receiving oxygen, and facilitating the suppression process. The design of the nozzle can impact the range and pattern of the agent's distribution, which is crucial for targeting the fire source effectively.

The other available choices, while related to fire safety, do not accurately define the specific function of nozzles within a dry chemical suppression system. For instance, containing the fire, providing an escape route, or maintaining system pressure are important concepts in firefighting but do not pertain to the nozzle's function in agent dispersion.